What the vulnerability does
01Description
The Support Board plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the sb_file_delete function in all versions up to, and including, 3.8.0. This makes it possible for attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). An attacker can leverage CVE-2025-4855 vulnerability to exploit this vulnerability unauthenticated.
Explanation of Vulnerability in Simple Terms
02Summary
Support Board versions 3.8.0 and earlier contain a path traversal vulnerability that allows unauthenticated attackers to read arbitrary files from the server. An attacker can craft requests to access files outside the intended directory, potentially exposing sensitive configuration files, database credentials, or other confidential data. No user interaction is required.
What an attacker can do
03Attacker Capabilities
Read arbitrary files from the server, including sensitive configuration and credential files.
Potential impact on your site
04Site Impact
Attackers can access sensitive files like database credentials, API keys, and configuration data without logging in.
Conditions required to exploit
05Prerequisites
Network access to the Support Board installation; no authentication or user interaction required.
Key dates
06Disclosure timeline
July 8, 2025
CVE published
April 8, 2026
Record updated
